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Finding the Fourth Proportional to 1,978,803.60, 2,968,205.40 and 1,032,051.30

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Solution

The fourth proportional to 1,978,803.60, 2,968,205.40 and 1,032,051.30 is: 1,548,076.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,803.60 : 2,968,205.40 = 1,032,051.30 : x
  2. Step 2: Convert to fraction form
    1,978,803.60/2,968,205.40 = 1,032,051.30/x
  3. Step 3: Cross multiply
    1,978,803.60x = 2,968,205.40 × 1,032,051.30
  4. Step 4: Simplify right side
    1,978,803.60x = 3,063,340,241,737.02
  5. Step 5: Solve for x
    x = 3,063,340,241,737.02/1,978,803.60
  6. Step 6: Final answer
    x = 1,548,076.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.